#include <iostream>
using namespace std;

int my_sum(int x, int y){
    return x+y;
}
double my_sum(double x, double y){
    return x+y;
}

int main(int argc, const char *argv[]){
    int a = 10;
    int b = 20;
    double c = 3.14;
    double d = 5.28;
    cout << my_sum(a, b) << endl; // 30
    cout << my_sum(c, d) << endl; // 8.42
    return 0;
}